Observed 11:20 AM EDT at KIAD

Countryside, VA weather

Sunny and 55°13°, jacket by 7 PM.

Forecasts agree

Now 55°13°

Sunny

Wind: 5 mph7 km/h; From the north. Up to 5 mph8 km/h through 11 PM
Dew point: 41°5°; Comfortable
UV index: 4Moderate; Moderate until 5 PM
Air quality: 55Moderate; Main pollutant: PM2.5 (fine particles)
Pressure: 30.57 inHg1035 hPa; Falling slowly · −0.02 inHg−0.6 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below 50°10° tonight after 9 PM
Fog tonight 1–2 AM
Fog tonight 3–4 AM
Above 50°10° tomorrow by 10 AM
Fog Monday 8–9 AM

This afternoonUp to 64°18° by 3 PM · Clear
TonightDown to 36°2° by 4 AM · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonUp to 66°19° by 3 PM · Clear
Tomorrow nightDown to 39°4° by 5 AM · Clear
Monday morningUp to 50°10° by 10 AM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 11a	Sunny	53°12° (likely 53°12° to 55°13°)	53°12°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	69%	0%	3
Sat 12p	Sunny	58°14° (likely 57°14° to 59°15°)	58°14°	0%	3 mph5 km/h from E, gusts 10 mph16 km/h	53%	6%	4
Sat 1p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	5 mph8 km/h from SE, gusts 9 mph14 km/h	48%	10%	4
Sat 2p	Sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	5 mph8 km/h from SE, gusts 8 mph13 km/h	43%	14%	4
Sat 3p	Mostly sunny	64°18° (likely 60°16° to 64°18°)	64°18°	0%	5 mph8 km/h from SE, gusts 8 mph12 km/h	41%	22%	4
Sat 4p	Mostly sunny	63°17° (likely 60°16° to 63°17°)	63°17°	0%	5 mph8 km/h from SE, gusts 7 mph11 km/h	43%	20%	3
Sat 5p	Mostly sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	3 mph5 km/h from SE, gusts 8 mph13 km/h	44%	28%	1
Sat 6p	Mostly clear	59°15° (likely 56°13° to 59°15°)	59°15°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	49%	25%	0
Sat 7p	Mostly clear	53°12° (likely 52°11° to 56°13°)	53°12°	0%	3 mph5 km/h from E, gusts 7 mph11 km/h	61%	30%	0
Sat 8p	Clear	50°10° (likely 49°9° to 53°12°)	49°9°	0%	3 mph5 km/h from E, gusts 9 mph14 km/h	71%	18%	0
Sat 9p	Clear	46°8° (likely 46°8° to 51°11°)	46°8°	0%	1 mph2 km/h from E, gusts 8 mph14 km/h	83%	3%	0
Sat 10p	Clear	43°6° (likely 43°6° to 49°9°)	43°6°	0%	1 mph2 km/h from E, gusts 7 mph12 km/h	93%	0%	0
Sat 11p	Clear	41°5° (likely 41°5° to 48°9°)	41°5°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	3%	0
Sun 12a	Clear	40°4° (likely 40°4° to 47°8°)	40°4°	0%	0 mph0 km/h, gusts 7 mph10 km/h	100%	19%	0
Sun 1a	Fog	39°4° (likely 39°4° to 46°8°)	39°4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	26%	0
Sun 2a	Partly cloudy	37°3° (likely 37°3° to 46°8°)	37°3°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	39%	0
Sun 3a	Fog	37°3° (likely 37°3° to 45°7°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	20%	0
Sun 4a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	12%	0
Sun 5a	Clear	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	9%	0
Sun 6a	Clear	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	10%	0
Sun 7a	Sunny	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	14%	0
Sun 8a	Sunny	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	18%	0
Sun 9a	Mostly sunny	42°6° (likely 41°5° to 45°7°)	42°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	93%	18%	1
Sun 10a	Sunny	51°11° (likely 50°10° to 52°11°)	51°11°	0%	0 mph0 km/h, gusts 6 mph9 km/h	74%	4%	2
Sun 11a	Sunny	56°13° (likely 56°13° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	66%	4%	3
Sun 12p	Sunny	60°16° (likely 59°15° to 61°16°)	60°16°	0%	0 mph0 km/h, gusts 5 mph8 km/h	58%	6%	4
Sun 1p	Sunny	62°17° (likely 62°17° to 63°17°)	62°17°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	52%	6%	4
Sun 2p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	1 mph2 km/h from S, gusts 5 mph7 km/h	46%	7%	4
Sun 3p	Sunny	66°19° (likely 64°18° to 66°19°)	66°19°	0%	1 mph2 km/h from SE, gusts 5 mph7 km/h	45%	6%	4
Sun 4p	Sunny	66°19° (likely 64°18° to 66°19°)	66°19°	0%	1 mph2 km/h from SE, gusts 5 mph8 km/h	45%	6%	3
Sun 5p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	48%	20%	1
Sun 6p	Clear	61°16° (likely 59°15° to 61°16°)	61°16°	0%	0 mph0 km/h, gusts 4 mph7 km/h	56%	9%	0
Sun 7p	Clear	56°13° (likely 55°13° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 5 mph7 km/h	69%	1%	0
Sun 8p	Clear	52°11° (likely 52°11° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 3 mph6 km/h	80%	0%	0
Sun 9p	Clear	49°9° (likely 49°9° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	0%	0
Sun 10p	Clear	46°8° (likely 46°8° to 52°11°)	46°8°	0%	0 mph0 km/h, gusts 3 mph5 km/h	96%	0%	0
Sun 11p	Clear	44°7° (likely 44°7° to 50°10°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Mon 12a	Clear	43°6° (likely 43°6° to 48°9°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Mon 1a	Clear	42°6° (likely 42°6° to 46°8°)	42°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Mon 2a	Clear	41°5° (likely 41°5° to 45°7°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	1%	0
Mon 3a	Clear	41°5° (likely 41°5° to 44°7°)	41°5°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	12%	0
Mon 4a	Clear	40°4° (likely 40°4° to 44°7°)	40°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	15%	0
Mon 5a	Clear	39°4° (likely 39°4° to 43°6°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	19%	0
Mon 6a	Mostly clear	37°3° (likely 37°3° to 42°6°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	28%	0
Mon 7a	Mostly clear	36°2° (likely 36°2° to 41°5°)	36°2°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	100%	35%	0
Mon 8a	Fog	38°3° (likely 36°2° to 42°6°)	38°3°	0%	1 mph2 km/h from W, gusts 3 mph6 km/h	100%	49%	0
Mon 9a	Mostly sunny	43°6° (likely 38°3° to 49°9°)	43°6°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	93%	36%	1
Mon 10a	Sunny	50°10° (likely 45°7° to 55°13°)	50°10°	0%	2 mph3 km/h from NW, gusts 6 mph10 km/h	80%	3%	2

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Mostly sunny. High 64°18°, low 35°2°. Typical 65°18° / 42°6°. Dry. Forecasts agree.
1. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
2. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
3. Overnight
  midnight–6 AM
  Fog, 36°2°
  Dry
Official NWS forecast
Today: Sunny, with a high near 64. East wind around 5 mph.
Tonight: Patchy fog between 11pm and 2am, then patchy frost and patchy fog. Mostly clear, with a low around 35. Northeast wind 0 to 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–64°18°
Low, likely
35°2°–39°4°
Typical high / low
65°18° / 42°6°
Wind
6 mph10 km/h, gusts 12 mph20 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 66°19°, low 36°2°. Typical 64°18° / 42°6°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Official NWS forecast
Day: Patchy frost and patchy fog before 9am. Sunny, with a high near 66. Southeast wind around 1 mph.
Night: Clear, with a low around 36. Wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–66°19°
Low, likely
36°2°–41°5°
Typical high / low
64°18° / 42°6°
Wind
6 mph9 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 70°21°, low 46°8°. Typical 64°18° / 41°5°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Mostly sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy frost before 8am. Sunny, with a high near 70. Northwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–70°21°
Low, likely
36°2°–46°8°
Typical high / low
64°18° / 41°5°
Wind
8 mph13 km/h, gusts 14 mph23 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 67°19°, low 43°6°. Typical 64°18° / 41°5°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 67.
Night: Mostly clear, with a low around 43.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
64°18°–69°21°
Low, likely
42°6°–49°9°
Typical high / low
64°18° / 41°5°
Wind
8 mph14 km/h, gusts 17 mph27 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 65°18°, low 46°8°. Typical 64°18° / 41°5°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 65.
Night: Mostly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–66°19°
Low, likely
41°5°–47°8°
Typical high / low
64°18° / 41°5°
Wind
7 mph11 km/h, gusts 16 mph26 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 70°21°, low 48°9°. Typical 63°17° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Mostly clear, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–70°21°
Low, likely
45°7°–48°9°
Typical high / low
63°17° / 40°4°
Wind
7 mph11 km/h, gusts 24 mph38 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 73°23°, low 47°8°. Typical 63°17° / 40°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 73.
Night: Mostly clear, with a low around 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
73°23°–75°24°
Low, likely
43°6°–48°9°
Typical high / low
63°17° / 40°4°
Wind
11 mph18 km/h, gusts 26 mph42 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 70°21°, low 46°8°. Typical 62°17° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–75°24°
Low, likely
42°6°–50°10°
Typical high / low
62°17° / 40°4°
Wind
11 mph17 km/h, gusts 28 mph44 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 68°20°, low 50°10°. Typical 62°17° / 40°4°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  30% chance · 0.01 in0.3 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
57°14°–73°23°
Low, likely
40°4°–54°12°
Typical high / low
62°17° / 40°4°
Wind
9 mph15 km/h, gusts 22 mph36 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 68°20°, low 54°12°. Typical 62°17° / 39°4°. Rain 0.09 in2.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 58°15°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°15°
  20% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–76°24°
Low, likely
44°7°–59°15°
Typical high / low
62°17° / 39°4°
Wind
8 mph12 km/h, gusts 17 mph27 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 64°, low 35°.
Tomorrow
Dry, high 66°, low 36°.
Monday
Dry, high 70°, low 46°, warming up.
Rest of week
Mostly dry, highs 65–73°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (LWX) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Potomac River at Edwards Ferry

4.5 mi

Below flood stage

Level: 3.8 ft

Forecast peak 3.9 ft Sat 8 PM

Reading from Sat 9:45 AM · NWS gauge page

Seneca Creek at Dawsonville

6.7 mi

Below flood stage

Level: 1.9 ft
Flow: 41 cfs

Forecast peak 2.0 ft Sat 8 PM

Reading from Sat 9:50 AM · NWS gauge page

Goose Creek near Leesburg

9.2 mi

Below flood stage

Level: 1.5 ft
Flow: 108 cfs

Forecast peak 1.6 ft Sun 2 AM

Reading from Sat 9:45 AM · NWS gauge page

Broad Run near Sterling

1.2 mi

Below flood stage

Level: 1.8 ft
Flow: 51 cfs

Reading from Sat 10:40 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 63% less heating than a typical week.

This week 32Typical 88

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 25
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 19 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Today, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Washington Dulles International Airport · official normals 1991–2020 · records 1960–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 2°1° colder than normal (daily mean temperature).

−6°−3°SunOct 18
−3°−2°MonOct 19
+2°+1°TueOct 20
±0°WedOct 21
−2°−1°ThuOct 22
−1°FriOct 23
—SatOct 24

Countryside weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 21 s a day; shortest Dec 21, 1 h 25 min less
Golden hour: 5:41–6:35 PM; Morning 7:11–8:05 AM
Blue hour: 6:35–6:45 PM; Morning 7:01–7:11 AM; first light 7:01 AM

Stars tonight? Fair

Mostly clear 8 PM–1 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:41 AM · rises 5:14 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Countryside. The highest point on the skyline is about 3,400 ft, 56 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Countryside, VA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Potomac River at Edwards Ferry

Seneca Creek at Dawsonville

Goose Creek near Leesburg

Broad Run near Sterling

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon